"I use the product for about a year. What can I say on the result, TrustMaster really works and performs its functions at 100%. It supports work with all known postal services and is constantly supplemented with new features. Technical support of TrustMaster is on top, rare bugs are fixed very quickly. There is also an online chat in English where you can chat with colleagues on any subject on the mailings. I recommend this product to purchase!" - Арсен Пушка from the forum zennolab.com